CN103889134B - Lamp device and projector - Google Patents
Lamp device and projector Download PDFInfo
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- CN103889134B CN103889134B CN201410128257.5A CN201410128257A CN103889134B CN 103889134 B CN103889134 B CN 103889134B CN 201410128257 A CN201410128257 A CN 201410128257A CN 103889134 B CN103889134 B CN 103889134B
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
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- Circuit Arrangements For Discharge Lamps (AREA)
- Projection Apparatus (AREA)
Abstract
The invention provides to simplify and form and reduce lamp device and the projector of the load of the component parts of circuit substrate, circuit element etc.The electrode E that lamp device 6 has to discharge lamp supplies electric power, lights this discharge lamp.Lamp device 6 has makes high voltage pulse occur and the pulse generation circuit 64 applied the electrode of discharge lamp by this high voltage pulse.Pulse generation circuit 64 possesses inductor (secondary winding 6422 of transformer 642) that output and the electrode E of discharge lamp connect and connects with output and make the electric current applied electrode E produce free-running capacitor 643,644 together with this inductor.
Description
The application be in the application number submitted on September 14th, 2010 be 201010282927.0, name is called the divisional application of the patent application of " lamp device and projector ".
Technical field
The present invention relates to the lamp device and projector that make discharge tube lighting.
Background technology
In the past, knownly possess light source, modulate the light beam from this light source outgoing and form the projector of the optic modulating device of the image corresponding to image information and the projecting optical device of this image that projects.Such light source often adopts the discharge lamp of the extra-high-pressure mercury vapour lamp being formed with the discharge space enclosing pair of electrodes and discharging substance in inside etc., this occasion, adopts the illumination controller lighted controlling this discharge lamp.Such illumination controller is known possesses the control device (control circuit) (for example, referring to patent documentation 1) making the lamp device of this discharge tube lighting and the action of this lamp device of control to discharge lamp supply lamp electric power.
The illumination controller (high pressure discharge lamp lighting apparatus) that this patent documentation 1 is recorded comprises chopper circuit (choppercircuit), full-bridge circuit (full-bridgecircuit), resonant circuit (resonatingcircuit) and ignitor circuit (ignitercircuit).
Chopper circuit makes, from the voltage step-down of DC power portion input, to export to full-bridge circuit.The direct current of input is transformed to alternating current by full-bridge circuit, supply high-pressure discharge lamp.Resonant circuit is resonance by the switch motion of full-bridge circuit, and high voltage occurs., there is the pulse voltage for starting high-pressure discharge lamp in the high voltage that ignitor circuit utilizes resonant circuit to occur.
Here, in the discharge lamp that dark cold place is placed, the inner luminescent substance enclosed becomes the restrained condition being difficult to activate, and applies the method than usually high lighting start voltage when therefore existence is lighted.
Relatively, in this illumination controller, by possessing ignitor circuit and resonant circuit, can high voltage be there is, therefore can destroy the interelectrode insulation of the discharge lamp that dark cold place is placed.
Patent documentation 1: Japanese Unexamined Patent Publication 2009-54365 publication.
But, in the illumination controller described in aforesaid patent documentation 1, owing to possessing resonant circuit and ignitor circuit respectively, therefore there is the problem of the formation complexity of lamp device.In addition, there is high voltage in the downstream of resonant circuit, therefore there is the problem that substrate and circuit element etc. are easily deteriorated.
Summary of the invention
The object of this invention is to provide to simplify and form and reduce lamp device and the projector of the load of component parts.
In order to reach above-mentioned purpose, lamp device of the present invention, the electrode supply electric power had to discharge lamp and make this discharge tube lighting, it is characterized in that, possess: pulse generation circuit, there is high voltage pulse and applied above-mentioned electrode by this high voltage pulse in it, above-mentioned pulse generation circuit possesses: inductor, and its output is connected via going between with above-mentioned electrode; And capacitor, itself and above-mentioned output are connected in series, and make the electric current to above-mentioned electrode applies produce free oscillation together with above-mentioned inductor.
As the discharge lamp that such lamp device is lighted, it can be the illuminator of extra-high-pressure mercury vapour lamp etc.
According to the present invention, make the electric current to electrode applies that high-tension overshoot (free oscillation) occur by the inductor of pulse generation circuit and capacitor, thus the voltage that the electrode of discharge lamp is applied can be improved.Thus, the resonant circuit beyond this pulse generation circuit need not be set.Thus, the formation of lamp device can be simplified.
In addition, the output of capacitor and inductor is via the Electrode connection of lead-in wire with discharge lamp, and therefore, this high voltage is not applied to other formations of lamp device.Thus, the burden of the component parts of the circuit element forming lamp device etc. can be alleviated.
Here, in the illumination controller described in aforesaid patent documentation 1, owing to forming the deviation of parts constant, the variation etc. of driving frequency of the parts of resonant circuit, may export from resonant circuit and expect above high voltage.Thus, in order to export the voltage of expectation, must point of adjustment brightening circuit entirety.Relatively, according to the present invention, the high voltage of generation is applied directly to electrode via lead-in wire, and therefore, high voltage is not applied to the component parts of lamp device, reliably can alleviate the burden of this component parts.
And, the capacitance of capacitor can be set to can produce for remove restrained condition that aforementioned dark cold place places the degree of voltage of necessary degree.Thus the occasion ratio with adopting aforesaid resonant circuit, can reduce the capacitance of capacitor.
In the present invention, best above-mentioned pulse generation circuit possesses the transformer with a winding and secondary winding, and above-mentioned inductor is above-mentioned secondary winding.
Here, the situation that transformation (boosting) transformer is set at pulse generation circuit is had.Relatively, in the present invention, by the secondary winding of this transformer is used as inductor, inductor need not be set in addition.Thus, the formation of pulse generation circuit and lamp device can be simplified further.
Projector of the present invention, is characterized in that having aforesaid lamp device.
Projector of the present invention can realize the action effect same with aforesaid lamp device of the present invention.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the formation of the projector of one embodiment of the invention.
Fig. 2 is the circuit diagram of the formation of illumination controller in above-described embodiment.
Fig. 3 is the front oscillogram to the voltage that electrode applies of action of the pulse generation circuit in above-described embodiment.
Symbol description:
1 ... projector, 6 ... lamp device, 7 ... control device, 416 ... discharge lamp, 62 ... translation circuit, 64 ... pulse generation circuit, 642 ... transformer, 643,644 ... capacitor, 6421 ... a winding, 6422 ... secondary winding (inductor), E(E1, E2) ... electrode.
Embodiment
Below, with reference to the accompanying drawings one embodiment of the invention is described.
The schematic diagram of the formation of Tu1Shi the present embodiment projector 1.
The light beam of light supply apparatus 411 outgoing arranged from inside is modulated by the projector 1 of the present embodiment, forms the image corresponding to image information, and this image is amplified projection being projected on face of screen etc.This projector 1 as shown in Figure 1, possesses exterior basket 2, projecting optical device 3 and image processing system 4.In addition, projector 1 possesses the control unit 93 etc. of the cooling unit 91 be made up of the cooling fan etc. of this projector 1 inside of cooling, the power subsystem 92 supplying electric power to each component parts of projector 1 inside and control projector 1 entirety.
(formation of exterior basket and projecting optical device)
Exterior basket 2 is similar to the rectangular-shaped basket formed by synthetic resin or metal with entirety, and aforesaid each device 3,4 and each unit 91 ~ 93 etc. are in inside storage configuration.
The image that the image processing system 4 that projecting optical device 3 will be described below is formed is being projected imaging on face, and amplifies this image of projection.Although the diagram of eliminating, this projecting optical device 3 is configured in the lens barrel of tubular, received the set of lenses of multiple lens.
(formation of image processing system)
Image processing system 4 is under the control of aforesaid control unit 93, forms the Optical devices of the image light corresponding to image information.This image processing system 4 possesses illumination optics device 41, look separation optics 42, relay optics 43 and electro-optical device 44, these storages are configured in the assigned position be set on inner lighting optical axis A, also possess the basket used for optical part 45 of projection support Optical devices 3 in addition.
Illumination optics device 41 possess light supply apparatus 411, a pair lens arra 412,413, polarization conversion device 414 and overlapping lens 415.
Look separation optics 42 possesses dichronic mirror 421,422 and speculum 423, and relay optics 43 has light incident side lens 431, relay lens 433 and speculum 432,434.
Electro-optical device 44 possesses: field lens 441; 3 liquid crystal panel 442(red light as optic modulating device are used, green light is used and the liquid crystal panel of blue light, are 442R, 442G, 442B respectively); Each 3 incident side polarization plate 443, viewing angle compensation plate 444 and exiting side polarization plates 445; As the cross dichroic prism 446 of look synthesizing optical device.
In such image processing system 4, by illumination optics device 41, the illumination in field of illumination is similar to the beam exit of homogenization, this light beam is separated into 3 coloured light of red (R), green (G), blue (B) by look separation optics 42.These each coloured light be separated are modulated respectively according to image information at each liquid crystal panel 442, form the image of each coloured light.The image of this each coloured light is synthesized by cross dichroic prism 446, is being projected amplification projection on face by projecting optical device 3.
(formation of light supply apparatus)
Light supply apparatus 411 as shown in Figure 1, possesses discharge lamp 416, principal reflection mirror 417, subreflector 418 and parallelization concavees lens 419, receives these housing in inside the illumination controller 5 lighted of (diagram is omitted) and controlled discharge lamp 416.
Wherein, discharge lamp 416 has: have in the discharge space that formed in inside and enclose pair of electrodes E(E1, E2) illuminating part 4161 of the approximate sphericity of (with reference to Fig. 2) and discharging substance; From a pair sealing 4162,4163 that the two ends of this illuminating part 4161 extend with the direction mutually left.Such discharge lamp such as can adopt extra-high-pressure mercury vapour lamp etc.
Principal reflection mirror 417 is fixed to the sealing 4162 leaving side from lens arra 412 by bonding agent.In the inner side of this principal reflection mirror 417, form the reflecting surface of concave curved surface shape, by the light of this reflective surface from illuminating part 4161 incidence, the 2nd focus convergence on lighting optical axis A.
Subreflector 418 is formed products of the glass of sealing 4163 side (opposition side of principal reflection mirror 417 side) covered in illuminating part 4161.This subreflector 418 has the shape of the profile along this illuminating part 4161, forms reflecting surface in the face relative with illuminating part 4161.Subreflector 418 reflects in the light from illuminating part 4161 outgoing to the light of the opposition side outgoing of principal reflection mirror 417 side, and incides the reflecting surface of principal reflection mirror 417.Thus, the direct outgoing in front in the beam exit direction from illuminating part 4161 to light supply apparatus 411 can be suppressed and the generation of the not light of entrance lens array 412.
Parallelization concavees lens 419 make to be reflected by principal reflection mirror 417 and the light beam of restraining relative to lighting optical axis A parallelization.
(formation of illumination controller)
Fig. 2 is the diagram of the formation of illumination controller 5.
Illumination controller 5 as shown in Figure 2, possesses: to electrode E(E1, the E2 of discharge lamp 416 after the direct current supplied from aforesaid power subsystem 92 being transformed to alternating current) export, light the lamp device 6 of this discharge lamp 416; The control device 7 of lamp device 6 is controlled under the control of aforesaid control unit 93.
(formation of lamp device)
Lamp device 6 possesses reduction voltage circuit 61, translation circuit 62, capacitor 63 and pulse generation circuit 64.
Reduction voltage circuit 61 is lower chopper circuits, is under the control of control device 7, the direct current inputted (such as, approximate 380V) is dropped to the circuit of the voltage (such as, approximate 50V ~ 150V) being suitable for discharge lamp 416 from power subsystem 92.The detailed icon of this reduction voltage circuit 61 omits, and such as, possesses the FET(field-effect transistor as the switch element be connected in series) and coil and the diode be connected with the branch of these elements and capacitor.In these, the grid voltage that FET applies according to control device 7, drops to the voltage of expectation by the direct current of input.In addition, coil, diode and capacitor carry out the removing of the high fdrequency component of the direct current inputted, rectification and invariable power.
Translation circuit 62 is inverter circuits, and the direct current of input is transformed to alternating current.This translation circuit 62 is configured to the bridge circuit with a pair FET621 and a pair FET622.Direct current through reduction voltage circuit 61 rectification inputs this translation circuit 62.After applying grid voltage by control device described later 7 couples of FET621 and FET622, the path comprising a pair FET621 and the mutual short circuit current flow of path comprising a pair FET622, thus, generate alternating current.This translation circuit 62 drives with high-frequency (such as more than 10kHz) before the lighting of discharge lamp 416, and drives after lighting with low frequency (such as below 1kHz).
Capacitor 63 is the coupling capacitors be connected with pulse generation circuit 64 by translation circuit 62.
Pulse generation circuit 64 is ignitor circuits, discharge lamp 416 light startup time action.Particularly, pulse generation circuit 64, to the pulse of electrode E output HIGH voltage, carries out the insulation breakdown between this electrode E, promotes the startup of discharge lamp 416.This pulse generation circuit 64 is connected in parallel with this discharge lamp 416 between translation circuit 62 and discharge lamp 416.Such pulse generation circuit 64 possesses primary circuit 641, igniter transformer (following, also referred to as transformer) 642, capacitor 643,644.
Primary circuit 641 possesses resistor 6411, diode 6412, capacitor 6413 and the FET6414 as switch element.In this primary circuit 641, from translation circuit 62 input electric current via resistor 6411 by after diode 6412 rectification, capacitor 6413 is applied, at this capacitor 6413 accumulated charge.After abundant electric charge accumulated by this capacitor 6413, if apply the grid voltage as triggering signal by control device 7 couples of FET6414, then FET6414 becomes ON state (conducting state), the electric charge that releasing capacitor 6413 is accumulated.Thus via FET6414, large pulse current flows to a winding 6421 of transformer 642.
Transformer 642 has a winding 6421 and secondary winding 6422.Wherein, a winding 6421 is connected with the output of aforesaid primary circuit 641.In addition, secondary winding 6422 plays the function of inductor of the present invention, and the input of this secondary winding 6422 is connected with translation circuit 62, output and electrode E(E1, E2) connect.
Such transformer 642, according to the electric current flowing to a winding 6421, makes the electric current transformation (boosting) flowing to secondary winding 6422.Thus, after aforesaid pulse current flows to a winding 6421, produce high voltage pulse (such as, approximate 6kV) in secondary winding 6422.
Capacitor 643,644 is connected with the output of secondary winding 6422.In other words, capacitor 643 and capacitor 644 are connected in series mutually, from the output of translation circuit 62, are connected in parallel with electrode E.These capacitors 643,644, before aforesaid high voltage pulse applies, together with secondary winding 6422, make the alternating current exported from transformer 642 produce free oscillation (overshoot) and step-down, apply electrode E.
In addition, by adopting 2 capacitors 643,644 can possess outside high voltage withstanding characteristic, even if in the occasion of side's fault, also its action can be made.
Such capacitor 643,644 is connected with the electrode E of discharge lamp 416 via lead-in wire L with the output of secondary winding 6422.Such as, transformer 642 and capacitor 643,644 are equipped on circuit substrate, and the output of transformer 642 and capacitor 643,644 is connected with electrode E via lead-in wire L.
(interelectrode insulation breakdown)
The occasion that discharge lamp is placed at dark cold place, as aforementioned, luminescent substance is difficult to activate, and therefore, at the high voltage pulse that the occasion of not placing applies electrode, has this interelectrode insulation to be difficult to situation about destroying.Below, such state is called restrained condition.
In order to remove this restrained condition, namely, in order to become the state that can produce insulation breakdown with the high voltage pulse exported from aforesaid secondary winding 6422, before the applying of this high voltage pulse, consider to apply high voltage to electrode E in advance in specified time limit (in the present embodiment, during capacitor 6413 accumulated charge).
Thus, by arranging capacitor 643,644, aforesaid to carry out the driving of translation circuit 62 with high-frequency time (before the lighting of discharge lamp 416, before the action of pulse generation circuit 64), increased by free oscillation (rising) from the peak value of the output voltage of transformer 642.
Fig. 3 is the diagram to an example of the waveform of the output voltage of discharge lamp 416 before the action of pulse generation circuit 64.
Such as, as shown in Figure 3, the ac square wave electric current of the 50kHz of input is made to produce the free oscillation of 1MHz by secondary winding 6422 and capacitor 643,644, thus, the peak value of the output voltage to the discharge lamp 416 before lighting can be brought up to 1.2kV from 200V.By applying such high voltage pulse to the electrode E of discharge lamp 416, removing and placing at aforementioned dark cold place the restrained condition formed.
In addition, this free oscillation is set to keeps off resonance condition, such as, decay within the half period of the high frequency of 50kHz.Particularly, in the present embodiment, smaller by the capacitance setting capacitor 643,644, and set free-running frequency up to such as 1MHz, make the free oscillation rapid decay occurred by secondary winding 6422 and capacitor 643,644.
Here, this free-running frequency is determined by as the secondary winding 6422 of inductor and the constant of capacitor 643,644.According to this free-running frequency, determine the peak voltage (such as 1.2kV) that free oscillation produces.
In addition, the necessary magnitude of voltage of releasing etc. of restrained condition condition because of discharge lamp 416 kind, environment etc. is set and different.Thus, by experiment measurement in advance can reliably remove just when, coordinate this just when, the capacitance, driving frequency etc. of setting capacitor.
In addition, large ring (ringing) is there is in capacitor 643,644 in the output of secondary winding 6422, as long as then there is the aforesaid necessary voltage of releasing being placed the restrained condition formed by dark cold place, capacitance (such as, counting 10pF) that therefore can be smaller is formed.
After applying high voltage (after constraint relief state), by applying aforesaid high voltage pulse to electrode E, the insulation between electrode E1, E2 is destroyed, and ensure that the electrically conducting between this electrode E1, E2, discharge lamp 416 is lighted.
Like this, after discharge lamp 416 is lighted, this discharge lamp 416 is with constant voltage load (such as approximate 10 ~ 150V) action, and control device 7, according to the output voltage of the reduction voltage circuit 61 detected and output current, carries out power limitation control.
(formation of control device)
Control device 7, as aforementioned, under the control of control unit 93, according to output voltage and the output current of reduction voltage circuit 61, controls the action of lamp device 6.Such as, control device 7, as aforementioned, is connected with reduction voltage circuit 61, applies grid voltage, make the current buck supplying translation circuit 62 from this reduction voltage circuit 61 to the FET of reduction voltage circuit 61.
In addition, control device 7 is connected with each FET621,622 forming translation circuit 62, exports grid voltage, generate alternating current by this translation circuit 62 from direct current to this each FET621,622.Now, control device 7, by changing the driving frequency of translation circuit 62, generates the alternating current of aforementioned frequencies, applies grid voltage to the FET6414 of primary circuit 641.In addition, the driving frequency variation of the translation circuit 62 that this control device 7 carries out carries out after the abundant accumulated charge of the capacitor 6413 of primary circuit 641, and in the present embodiment, control device 7 with the driving from lamp device 6 time elapsed time judge moment of the abundant electric charge of this accumulation.
According to the above projector 1 that the present embodiment is described, there is following effect.
Made the electric current generation free oscillation that electrode E is applied by the secondary winding 6422 of pulse generation circuit 64 and capacitor 643,644, the voltage that the electrode E of discharge lamp 416 is applied can be improved.Thus, at this pulse generation circuit 64, resonant circuit need not be set in addition.Thus, the formation of lamp device 6 can be simplified.Thus the miniaturization that the goods can tackling projector 1 grade require, cost reduce.
In addition, capacitor 643,644 is connected with the electrode E of discharge lamp 416 via lead-in wire with the output of secondary winding 6422, and therefore, this high voltage does not form (circuit element etc.) to other beyond the power path of lamp device 6 and applies.Thus, the burden of the component parts of the circuit element forming lamp device 6 etc. can be alleviated.
Such as, arrange the occasion of resonant circuit between translation circuit 62 and pulse generation circuit 64, owing to there is high voltage in the downstream of resonant circuit, therefore the burden of the component parts in the downstream of resonant circuit is large.Relatively, in above-mentioned formation, because resonant circuit can omit, therefore can not produce such burden.In addition, the short time reaches high-tension peak value, therefore, and the deterioration of the component parts of the circuit substrate, circuit element etc. that high-tension applying can be suppressed to cause.
And during interelectrode insulation breakdown, remove the aforesaid voltage being placed the necessary degree of restrained condition formed by dark cold place as long as produce, therefore, the occasion ratio with adopting aforesaid resonant circuit, can reduce the capacitance of capacitor 643,644.
Particularly, position shown in the capacitance of capacitor 643,644 with the dotted line P between translation circuit 62 and pulse generation circuit 64 (replacing capacitor 63) forms this resonant circuit capacitor when arranging resonant circuit compares, and can adopt the capacitance of low 1 ~ 2 order of magnitude.
In addition, in pulse generation circuit 64, needing transformation (boosting) transformer 642, due to the secondary winding 6422 of transformer 642 is used as inductor, therefore, in order to produce free oscillation, inductor need not be set in addition.Thus, the formation of pulse generation circuit 64 and lamp device 6 can be simplified further.
(distortion of embodiment)
The invention is not restricted to aforesaid embodiment, is also that the present invention comprises in the distortion, improvement etc. of the scope of attainable cost goal of the invention.
In above-described embodiment, lamp device 6 is formed by reduction voltage circuit 61, translation circuit 62, capacitor 63, pulse generation circuit 64, but be the present invention is not limited thereto.Such as, according to the specification of control device 7, also wave forming circuit and protective circuit etc. can be added.Form about circuit, as long as have the function same with aforementioned explanation, be just not limited to the formation of above-described embodiment.Such as, as the free-running capacitor of generation, have employed 2 capacitors 643,644, but also can be made up of a capacitor, also can be made up of the capacitor of more than 3.
In above-described embodiment, the secondary winding 6422 of transformer 642 is used as the inductor together with capacitor 643,644, free oscillation being occurred, but the present invention is not limited thereto.Such as, the formation that the inductor of free oscillation is set individually between secondary winding 6422 and capacitor 643,644 can also be adopted.
In above-described embodiment, pulse generation circuit 64 has FET6414 as switch element, but the present invention is not limited thereto.That is, according to the rules signal input, as long as can to electrode E apply high voltage pulse, also can be other form.In addition, also can adopt other switch elements of other transistor and thyristors etc., also can adopt discharging gap.
In above-described embodiment, make the frequency certain (such as 50kHz) of the translation circuit 62 before the lighting of driving discharge lamp 416, but the present invention is not limited thereto.That is, make this frequency variation to the frequency expected by control device 7, according to projector 1, environment etc. can be set to from pulse generation circuit 64 to the adjustment that the output of the electrode E of discharge lamp 416 is expected.
In above-described embodiment, aforesaidly being placed the restrained condition formed by dark cold place to remove, free oscillation occurring, but the present invention is not limited thereto.Such as, because other reasons cannot obtain the occasion of abundant voltage in pulse generation circuit 64, the crest voltage boosted by free oscillation can be adopted.In addition, free-running frequency example is 1MHz, but this frequency is not limited thereto.Such as also can high-frequency (being specially 500kHz ~ 3MHz degree) decay within the half period, and peak of occurrence threshold voltage (being specially 500 ~ 2kV degree).
In above-described embodiment, before the applying all at high voltage pulse in the occasion that discharge lamp is placed at dark cold place and the state (time usual) of not placing, electrode E is applied to the high voltage boosted by free oscillation, but the present invention is not limited thereto.Such as, also at projector's set temperature sensor, in the occasion lower than set point of temperature, the electric current to electrode E applies can be made to produce free oscillation, in addition, in the occasion higher than set point of temperature, do not produce free oscillation.
In above-described embodiment, enumerate the projector 1 possessing 3 liquid crystal panels 442R, 442G, 442B, but the present invention is not limited thereto.That is, the projector of the present invention's also liquid crystal panel of applicable employing less than 2 or more than 4.
In above-described embodiment, describe image processing system 4 and there is formation plane being seen approximate L-shaped shape, but be not limited thereto, such as, also can adopt the formation having and plane is seen approximate U-shaped.
In above-described embodiment, have employed the permeation type liquid crystal panel 442 that beam incident surface is different with beam exit face, also can adopt the reflective liquid crystal panel that light entrance face is identical with light-emitting face.
In above-described embodiment, as optic modulating device, exemplified with the projector 1 with liquid crystal panel 442, but, as long as form the optic modulating device of optical image according to modulate image information incident beam, other optic modulating devices formed also can be adopted.Such as, in the projector also applicable the present invention adopting the optic modulating device beyond the liquid crystal such as device of micro mirror.Adopt the occasion of such optic modulating device, the polarization plates 443,445 of light beam light incident side and beam-exiting side can be omitted.
In above-described embodiment, adopt the lamp device 6 lighting discharge lamp 416 in projector 1, but the present invention is not limited thereto.That is, such lamp device 6 also may be used for the lighting device of grandstand etc.And, also can utilize this lamp device 6 by monomer.
[utilizing possibility in industry]
The present invention is applicable to the lamp device of discharge lamp, is particularly useful for the lamp device that projector adopts.
Claims (8)
1. a lamp device, the electrode had to discharge lamp supply electric power and make this discharge tube lighting, is characterized in that possessing:
Translation circuit, direct current is transformed to alternating current by it; With
Pulse generation circuit, there is high voltage pulse and above-mentioned electrode applied this high voltage pulse in it;
Above-mentioned pulse generation circuit possesses:
Inductor, its output and above-mentioned Electrode connection; With
Capacitor, it is connected with above-mentioned output, and makes the electric current to above-mentioned electrode applies produce free oscillation together with above-mentioned inductor;
The above-mentioned free oscillation produced by above-mentioned inductor and above-mentioned capacitor decays within the half period of the above-mentioned alternating current converted by above-mentioned translation circuit.
2. lamp device according to claim 1, is characterized in that,
Frequency ratio before above-mentioned direct current is transformed to above-mentioned discharge tube lighting by above-mentioned translation circuit lights rear high alternating current.
3. lamp device according to claim 1, is characterized in that,
Above-mentioned pulse generation circuit possesses the transformer with a winding and secondary winding,
Above-mentioned inductor is above-mentioned secondary winding.
4. lamp device according to claim 3, is characterized in that,
Above-mentioned transformer has multiple above-mentioned secondary winding, and multiple electrodes that above-mentioned multiple secondary winding and above-mentioned discharge lamp have are connected respectively.
5. lamp device according to claim 1, is characterized in that,
Above-mentioned pulse generation circuit possesses multiple above-mentioned inductor, and multiple electrodes that above-mentioned multiple inductor and above-mentioned discharge lamp have are connected respectively.
6. the lamp device according to any one of Claims 1 to 5, is characterized in that,
Above-mentioned capacitor is connected in series by multiple capacitor and forms.
7. the lamp device according to any one of Claims 1 to 5, is characterized in that,
Above-mentioned inductor is connected to above-mentioned electrode via lead-in wire.
8. a projector, is characterized in that,
There is the lamp device according to any one of claim 1 ~ 7.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009-211376 | 2009-09-14 | ||
| JP2009211376A JP5493618B2 (en) | 2009-09-14 | 2009-09-14 | Lighting device and projector |
| CN201010282927.0A CN102026455B (en) | 2009-09-14 | 2010-09-14 | Lighting device and projector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010282927.0A Division CN102026455B (en) | 2009-09-14 | 2010-09-14 | Lighting device and projector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103889134A CN103889134A (en) | 2014-06-25 |
| CN103889134B true CN103889134B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010282927.0A Active CN102026455B (en) | 2009-09-14 | 2010-09-14 | Lighting device and projector |
| CN201410128257.5A Expired - Fee Related CN103889134B (en) | 2009-09-14 | 2010-09-14 | Lamp device and projector |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010282927.0A Active CN102026455B (en) | 2009-09-14 | 2010-09-14 | Lighting device and projector |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US8400069B2 (en) |
| JP (1) | JP5493618B2 (en) |
| CN (2) | CN102026455B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022692A (en) * | 2006-02-13 | 2007-08-22 | 优志旺电机株式会社 | Discharge lamp ignition device |
| CN101513129A (en) * | 2006-08-31 | 2009-08-19 | 松下电工株式会社 | Discharge lamp operation device and illumination device |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0314077B1 (en) * | 1987-10-27 | 1994-01-26 | Matsushita Electric Works, Ltd. | Discharge lamp driving circuit |
| JPH05258872A (en) * | 1992-03-16 | 1993-10-08 | Matsushita Electric Ind Co Ltd | Lighting device for discharge lamp |
| CA2104737C (en) * | 1992-08-26 | 1997-01-28 | Minoru Maehara | Inverter device |
| US5399943A (en) * | 1992-12-24 | 1995-03-21 | Micro-Technology, Inc.-Wisconsin | Power supply circuit for a discharge lamp |
| TW302591B (en) * | 1993-06-24 | 1997-04-11 | Samsung Electronics Co Ltd | |
| JP3172095B2 (en) * | 1996-06-14 | 2001-06-04 | セイコーインスツルメンツ株式会社 | Charge / discharge control circuit and rechargeable power supply |
| CA2206200C (en) * | 1997-04-18 | 2000-06-27 | Matsushita Electric Works, Ltd. | Discharge lamp lighting device |
| JP2000286082A (en) * | 1999-03-30 | 2000-10-13 | Toshiba Lighting & Technology Corp | Discharge lamp lighting dvice, step-up transformer for starting and lighting system |
| JP4338123B2 (en) * | 2003-04-25 | 2009-10-07 | スミダコーポレーション株式会社 | Discharge lamp driving device |
| JP4218545B2 (en) * | 2004-02-19 | 2009-02-04 | 三菱電機株式会社 | High pressure discharge lamp lighting device and integrated lighting fixture |
| JP2008027711A (en) | 2006-07-20 | 2008-02-07 | Harison Toshiba Lighting Corp | Discharge lamp lighting device |
| EP2046096A1 (en) * | 2006-07-20 | 2009-04-08 | Harison Toshiba Lighting Corporation | Discharge lamp lighting device |
| JP4972151B2 (en) * | 2007-02-19 | 2012-07-11 | パナソニック株式会社 | Discharge lamp lighting device, lighting device, and liquid crystal display device |
| JP2008209818A (en) * | 2007-02-28 | 2008-09-11 | Funai Electric Co Ltd | Liquid crystal display |
| JP4807454B2 (en) * | 2007-06-20 | 2011-11-02 | パナソニック電工株式会社 | Discharge lamp lighting device, lighting device, and liquid crystal display device |
| JP5030017B2 (en) | 2007-08-24 | 2012-09-19 | 岩崎電気株式会社 | High pressure discharge lamp lighting device |
| US8049432B2 (en) * | 2008-09-05 | 2011-11-01 | Lutron Electronics Co., Inc. | Measurement circuit for an electronic ballast |
-
2009
- 2009-09-14 JP JP2009211376A patent/JP5493618B2/en not_active Expired - Fee Related
-
2010
- 2010-08-26 US US12/868,930 patent/US8400069B2/en active Active
- 2010-09-14 CN CN201010282927.0A patent/CN102026455B/en active Active
- 2010-09-14 CN CN201410128257.5A patent/CN103889134B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022692A (en) * | 2006-02-13 | 2007-08-22 | 优志旺电机株式会社 | Discharge lamp ignition device |
| CN101513129A (en) * | 2006-08-31 | 2009-08-19 | 松下电工株式会社 | Discharge lamp operation device and illumination device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102026455B (en) | 2014-05-07 |
| US20110062881A1 (en) | 2011-03-17 |
| US8400069B2 (en) | 2013-03-19 |
| CN102026455A (en) | 2011-04-20 |
| JP2011060683A (en) | 2011-03-24 |
| JP5493618B2 (en) | 2014-05-14 |
| CN103889134A (en) | 2014-06-25 |
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